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Finding the Fourth Proportional to 1,193.16, 1,788.06 and 948.60

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Solution

The fourth proportional to 1,193.16, 1,788.06 and 948.60 is: 1,421.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,193.16 : 1,788.06 = 948.60 : x
  2. Step 2: Convert to fraction form
    1,193.16/1,788.06 = 948.60/x
  3. Step 3: Cross multiply
    1,193.16x = 1,788.06 × 948.60
  4. Step 4: Simplify right side
    1,193.16x = 1,696,153.72
  5. Step 5: Solve for x
    x = 1,696,153.72/1,193.16
  6. Step 6: Final answer
    x = 1,421.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.